Phloem

The growth of the root occurs above the zone of cell division where cells elongate and differentiate (Reece 2014). The zone of cell division continues to produce cells above the root cap allowing for the continuous growth of the root. The roots are composed of xylem and phloem tissues covered by vascular tissue encased in ground tissue and epidermis (Reece 2014). The vascular cylinder contains xylem which transports water from the root to the leaves and phloem tissue that enables the transportation of glucose from the leaves to the rest of the plant. Eudicot roots will display a cross of xylem with phloem in between the lobes and monocot roots display a vascular cylinder with a core of parenchyma surrounded by xylem and a circle of xylem and phloem (Reece 2014). The shoot has a dome shaped apical meristem that produces new cells through cell division. Leaf primordia develop on the sides of the apical meristem with two auxiliary buds that produce branching in the plant when the primary apical meristem is…

The main objective of this study was to determine whether the rate of cavitation in xylem channels correlates with tree height by measuring the water tension from leaves at the top against leaves from the bottom of Acer Platanoides (Norway Maple) trees. We hypothesized that water tension would be higher at the top of trees than at the bottom. The secondary focus was to determine if varying water tension would affect the structural composition of leaves. In order to identify a relationship, we…

to supply knowledge to the medicinal plant identification. The morpho-anatomical studies reveals that leaves numerous, isobilateral, subsessile, acute, densely silky hairy, isobilateral in transection, epidermis uniseriate, peculiar non glandular two armed trichomes, anisocytic stomata on both surfaces. Vascular bundle collateral in leaf and bicollateral in young stem. The stem, in secondary growth, has the dermal system similar to the leaf; the elongated chlorenchyma followed by cortical…

lateral out curved wings. ii) The lamina has smooth and even surface with two layers of palisade cells and the marginal part of the lamina is curved down and bluntly conical. iii) The petiole consists of a thin layer of epidermis which consists of small, thick walled squarish cells, homogenous ground tissue and a deep bowl shaped vascular strand with two lateral smaller accessory strands. iv) The stem is circular and has thin continuous epidermal layer, a wide cortex with homogenous layers of…

Xylem and Phloem. Xylem is a specialized plant tissue that is responsible for carrying water and dissolved minerals or solutes that are absorbed from the roots and into the leaves. It makes up a large part in the stem of the plant, especially in woody plants in which the Xylem has matured into a large tree trunk. Individual cylindrical vessels are connected together to make up the Xylem, resulting to a continuous duct that conducts inorganic ions dissolved in water into various plant parts where…

III, IV B) III, V, I, II, IV C) II, IV, I, V, III D) IV, II, III, I, V E) I, V, III, II, IV Answer: E Topic: Concept 35.3 Skill: Knowledge/Comprehension 32) Which of the following is incorrectly paired with its structure and function? A) sclerenchymasupporting cells with thick secondary walls B) peridermprotective coat of woody stems and roots C) pericyclewaterproof ring of cells surrounding the central stele in roots D) mesophyllparenchyma cells functioning in…

From that, plants gain fluids and nutrients from their roots. A plants leaf contains veins, which is where the nutrients and hormones travel to reach the cells in the leaf. All the carbohydrates pass through the phloem. The phloems (phloem is the living tissue that transports the soluble organic compounds made during photosynthesis and known as photosynthates,)main function it to keep the cells passing by nourished and also hydrated. Inside the cells roots mineral, has a higher concentration…

chlorophyl plays a large role in photosynthesis this gives the leave its green colour and transfers light energy into chemical energy or food. The veins that can be seen along the leaf transport substances to and from the cells of the leaf. there are several differant layers of a leaf. The waterproof cuticle layer, the cuticle is a waterproof waxy layer which protects against pasastic fungi and cuts down on water lost by evaporation. the upper epidermis transparent is also a single layer cell.…

is capable of feeding on hundreds of plant species. The diversity of crops grown year-round in the Southwest creates an ideal environment for B. tabaci to flourish, often resulting in damaging infestation of melons, cotton, and broccoli. B. tabaci also transmits plant viruses such as Cucurbit Yellows Stunting Disorder Virus, or CYSDV, greatly exacerbating its pest potential. As with most, if not all insects, B. tabaci is a host to bacterial endosymbionts that potentially influence the biology…

All functions and structures in plants have been adapted to optimise the processes of photosynthesis and respiration. Plants have a root system, a stem, branches and leaves. The roots primary job is to absorb water and the nutrients from the soil. This is done with the help of the extra surface area that the root hairs provide (Gillaspy, 2008). Once water and minerals have diffused into the roots and root hairs, there are two types of tissue that helps transport the minerals and water through…